x264 encoding settings

[poncho524]

I'm trying to convert a video to MP4 using x264. Can someone help me decipher the dialog that pops up for configuring video encoding preferences?

It gives options for "bitrate" and "quality". What do these options correspond to in the x264 world?

I would think "quality" could be CRF, but it looks like "quality" has a range of 0-99, which it outside the range of CRF.

Does "bitrate" force min and max bitrate to the given value? Essentially forcing a CBR? Or is it just the average value, but allows for peaks for quality?

Also, how do the settings in codec preferences affect the values in the conversion profile?

It is possible to set both "bitrate" and "qulaity" to "not used"... so then what does it do?

I cannot find any place that describes this behavior.

Thanks for the help!

[poncho524]

So no one knows how this works??